Testosterone is a sex hormone, and I think it is the most social of hormones. The major social effect of testosterone is to orient us toward issues of sex and power. By the end of puberty testosterone levels in males are 8 to 10 times higher than in females, but decrease with age.

I put headlights in Ford vans. I still drive a Ford.

The act of choosing what to place in your piece when you're a historian or a non-fiction writer already renders it into fiction for someone else. In some ways fiction comes a lot closer to reality. When you start talking about something as brutal as slavery and life in the American West, it's really important to take a non- judgmental stance. We romanticize a great deal about life in the American West, but I thank God I wasn't living during that time. No matter what color you were, it was rough, crude, tough living.

If you're going to cheat and take people's history and you're not writing the Bible, you ain't really so great. But if you try to do it in a way that doesn't hurt too many people, then you probably can get out of bed in the morning and look at yourself in the mirror.

My family is my career.

First person narrative is a very effective tool but you have to know as a writer how to make it work.

I'm proud of 'Miracle at St. Anna' and I loved it; there's no question in my mind it's as good as any movie that came out in 2007.